Preheat your oven to 350°F (175°C) and prepare a loaf pan by greasing it or lining it with parchment paper.

Cut the block of cheddar cheese into ½ inch cubes and set aside.

In a large mixing bowl, combine the ground beef, eggs, grated Parmesan cheese, diced onion, salt, and garlic powder.

Fold in the cubed cheddar cheese into the meat mixture.

Transfer the meat mixture into the prepared baking pan, shaping it into a loaf.

Bake in the preheated oven for 50 to 60 minutes until golden brown and check for an internal temperature of 160°F (71°C).

Remove from the oven and let it rest for about 10 minutes before slicing.

Slice and serve warm, with optional toppings of sugar-free ketchup and fresh parsley.